Vegetable stew

Name: Vegetable stew
Ingredients: 1 tbsp olive oil, or rapeseed oil; 1 onion, finely chopped; 3 garlic cloves, sliced; 1 tsp smoked paprika; ½ tsp ground cumin; 1 tbsp dried thyme; 3 medium carrots (about 200g), sliced; 2 medium celery sticks (about 120g), finely sliced; 1 red pepper, chopped; 1 yellow pepper, chopped; 2 x 400g cans tomatoes, or peeled cherry tomatoes; 1 vegetable stock cube, made up to 250ml; 2 courgettes (about 300g), sliced thickly; 2 sprigs fresh thyme; 250g cooked puy lentils (we used Merchant Gourmet ready-to-eat puy lentils)